body{
    background-image: url("/images/login-bg.jpg");
    background-size: cover;
}

#header_title{
    width: 100%;
    height: 5%;
    background-color: #bacbe6;
}

#back_index{
    text-decoration: none;
    color: black;
    font-size: 0.5em;
    margin-left: 10%;
}
#back_index::before{
    display: inline-block;
    content: "";
    height: 100%;
    vertical-align: middle;
}

.col-12{
    margin-bottom: 2%;
}